Brake Fluid Woes

[mavmavv]

So a few months ago I installed a new MC to replace my vaccum leaking one. Everything worked pretty good for a few weeks. Now im losing brake fluid VEEERY slowly. Every 2 weeks or so my brake dummylight comes on.

What are the typical places to fail? The Master Cylinder looks fine, no real fluid I can see leaking. The drums are clean as are the rotors. Are there any other trouble spots I can check?

 

[87foxstang]

check all the fittings at the calipers and wheel cylinders, look for rotted lines etc. if there is no sign of leaking it may be an internal seal in the master cylinder. the fluid could be leaking into the booster.

Was the MC you bought new or remanufactured? Some reman ones have problems

 

[mavmavv]

Oh excuse me, I was writing up this post early in the morning. I bought a replacement brake booster, not MC.

But all the lines look pretty good, ill take a look in about an hour to see If I cant find some leaks.

 

[mavmavv]

Looks like it is indeed the master cylinder. Time for a new one....

 

[93 LX]

MC +1